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Overview
| Comment: | 1.0.31.0 code cleanup and fixes for view schemas |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | sourceforge |
| Files: | files | file ages | folders |
| SHA1: |
6ae6600f6fd3772ba1fa55b2d6e13607 |
| User & Date: | rmsimpson 2006-07-16 17:44:32 |
Context
|
2006-07-16
| ||
| 17:46 | Use package provider on full visualstudio versions check-in: 4060c752bc user: rmsimpson tags: sourceforge | |
| 17:44 | 1.0.31.0 code cleanup and fixes for view schemas check-in: 6ae6600f6f user: rmsimpson tags: sourceforge | |
| 17:43 | 1.0.31.0 - scalar function returns null instead of dbnull check-in: f96ea449db user: rmsimpson tags: sourceforge | |
Changes
Changes to System.Data.SQLite/SQLiteConnection.cs.
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/// <param name="isolationLevel">SQLite doesn't support varying isolation levels, so this parameter is ignored.</param>
/// <param name="deferredLock">When TRUE, SQLite defers obtaining a write lock until a write operation is requested.
/// When FALSE, a writelock is obtained immediately. The default is TRUE, but in a multi-threaded multi-writer
/// environment, one may instead choose to lock the database immediately to avoid any possible writer deadlock.</param>
/// <returns>Returns a SQLiteTransaction object.</returns>
public SQLiteTransaction BeginTransaction(IsolationLevel isolationLevel, bool deferredLock)
{
return BeginTransaction(true);
}
/// <summary>
/// Creates a new SQLiteTransaction if one isn't already active on the connection.
/// </summary>
/// <param name="deferredLock">When TRUE, SQLite defers obtaining a write lock until a write operation is requested.
/// When FALSE, a writelock is obtained immediately. The default is TRUE, but in a multi-threaded multi-writer
................................................................................
/// <summary>
/// Forwards to the local BeginTransaction() function
/// </summary>
/// <param name="isolationLevel"></param>
/// <returns></returns>
protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)
{
return BeginTransaction(isolationLevel, false);
}
/// <summary>
/// Not implemented
/// </summary>
/// <param name="databaseName"></param>
public override void ChangeDatabase(string databaseName)
................................................................................
/// <description>N</description>
/// <description>Y</description>
/// </item>
/// </list>
/// </remarks>
#if !PLATFORM_COMPACTFRAMEWORK
[RefreshProperties(RefreshProperties.All), DefaultValue("")]
[Editor("SQLite.Designer.SQLiteConnectionStringEditor, SQLite.Designer, Version=1.0.29.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public override string ConnectionString
{
get
{
return _connectionString;
}
................................................................................
tbl.Columns.Add("PRIMARY_KEY", typeof(bool));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table' OR [type] LIKE 'view'", strCatalog), this))
{
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this))
{
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly))
{
using (DataTable tblSchema = rd.GetSchemaTable(false, true))
{
foreach (DataRow schemaRow in tblSchema.Rows)
{
if (String.Compare(schemaRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0
|| strColumn == null)
{
row = tbl.NewRow();
row["TABLE_NAME"] = rdTables.GetString(2);
row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.ColumnName];
row["TABLE_CATALOG"] = strCatalog;
row["ORDINAL_POSITION"] = schemaRow[SchemaTableColumn.ColumnOrdinal];
row["COLUMN_HASDEFAULT"] = (schemaRow[SchemaTableOptionalColumn.DefaultValue] != DBNull.Value);
row["COLUMN_DEFAULT"] = schemaRow[SchemaTableOptionalColumn.DefaultValue];
row["IS_NULLABLE"] = schemaRow[SchemaTableColumn.AllowDBNull];
row["DATA_TYPE"] = schemaRow["DataTypeName"]; // SQLiteConvert.DbTypeToType((DbType)schemaRow[SchemaTableColumn.ProviderType]).ToString();
row["CHARACTER_MAXIMUM_LENGTH"] = schemaRow[SchemaTableColumn.ColumnSize];
row["TABLE_SCHEMA"] = schemaRow[SchemaTableColumn.BaseSchemaName];
row["PRIMARY_KEY"] = schemaRow[SchemaTableColumn.IsKey];
tbl.Rows.Add(row);
}
}
}
}
}
}
}
}
}
................................................................................
tbl.Columns.Add("INTEGRATED", typeof(bool));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
{
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
maybeRowId = false;
primaryKeys.Clear();
if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0)
{
// First, look for any rowid indexes -- which sqlite defines are INTEGER PRIMARY KEY columns.
// Such indexes are not listed in the indexes list but count as indexes just the same.
using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].table_info([{1}])", strCatalog, rdTables.GetString(2)), this))
{
using (SQLiteDataReader rdTable = cmdTable.ExecuteReader())
{
while (rdTable.Read())
{
if (rdTable.GetInt32(5) == 1)
{
primaryKeys.Add(rdTable.GetInt32(0));
// If the primary key is of type INTEGER, then its a rowid and we need to make a fake index entry for it.
if (String.Compare(rdTable.GetString(2), "INTEGER", true, CultureInfo.InvariantCulture) == 0)
maybeRowId = true;
}
}
}
if (primaryKeys.Count == 1 && maybeRowId == true)
{
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["INDEX_CATALOG"] = strCatalog;
row["PRIMARY_KEY"] = true;
row["INDEX_NAME"] = String.Format(CultureInfo.InvariantCulture, "sqlite_master_PK_{0}", rdTables.GetString(2));
row["UNIQUE"] = true;
if (String.Compare((string)row["INDEX_NAME"], strIndex, true, CultureInfo.InvariantCulture) == 0
|| strIndex == null)
{
tbl.Rows.Add(row);
}
primaryKeys.Clear();
}
}
// Now fetch all the rest of the indexes.
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_list([{1}])", strCatalog, rdTables.GetString(2)), this))
{
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
if (String.Compare(rd.GetString(1), strIndex, true, CultureInfo.InvariantCulture) == 0
|| strIndex == null)
{
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["INDEX_CATALOG"] = strCatalog;
row["INDEX_NAME"] = rd.GetString(1);
row["UNIQUE"] = rd.GetBoolean(2);
row["PRIMARY_KEY"] = false;
// Now for the really hard work. Figure out which index is the primary key index.
// The only way to figure it out is to check if the index was an autoindex and if we have a non-rowid
// primary key, and all the columns in the given index match the primary key columns
if (primaryKeys.Count > 0 && rd.GetString(1).StartsWith("sqlite_autoindex_" + rdTables.GetString(2), StringComparison.InvariantCultureIgnoreCase) == true)
{
using (SQLiteCommand cmdDetails = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_info([{1}])", strCatalog, rd.GetString(1)), this))
{
using (SQLiteDataReader rdDetails = cmdDetails.ExecuteReader())
{
int nMatches = 0;
while (rdDetails.Read())
{
if (primaryKeys.Contains(rdDetails.GetInt32(1)) == false)
{
nMatches = 0;
break;
}
nMatches++;
}
if (nMatches == primaryKeys.Count)
{
row["PRIMARY_KEY"] = true;
primaryKeys.Clear();
}
}
}
}
tbl.Rows.Add(row);
}
}
}
}
}
}
}
}
................................................................................
tbl.Columns.Add("TABLE_TYPE", typeof(string));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
{
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
strItem = rd.GetString(0);
if (String.Compare(rd.GetString(2), 0, "SQLITE_", 0, 7, true, CultureInfo.InvariantCulture) == 0)
strItem = "SYSTEM_TABLE";
if (String.Compare(strType, strItem, true, CultureInfo.InvariantCulture) == 0
|| strType == null)
{
if (String.Compare(rd.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0
|| strTable == null)
{
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rd.GetString(2);
row["TABLE_TYPE"] = strItem;
tbl.Rows.Add(row);
}
}
}
}
}
tbl.AcceptChanges();
tbl.EndLoadData();
................................................................................
tbl.Columns.Add("DATE_MODIFIED", typeof(DateTime));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'view'", strCatalog), this))
{
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
if (String.Compare(rd.GetString(1), strView, true, CultureInfo.InvariantCulture) == 0
|| String.IsNullOrEmpty(strView))
{
strItem = rd.GetString(4).Replace('\r', ' ').Replace('\n', ' ').Replace('\t', ' ');
nPos = Globalization.CultureInfo.InvariantCulture.CompareInfo.IndexOf(strItem, " AS ", CompareOptions.IgnoreCase);
if (nPos > -1)
{
strItem = strItem.Substring(nPos + 4).Trim();
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rd.GetString(2);
row["IS_UPDATABLE"] = false;
row["VIEW_DEFINITION"] = strItem;
tbl.Rows.Add(row);
}
}
}
}
}
tbl.AcceptChanges();
tbl.EndLoadData();
................................................................................
tbl.Locale = CultureInfo.InvariantCulture;
tbl.Columns.Add("CATALOG_NAME", typeof(string));
tbl.Columns.Add("DESCRIPTION", typeof(string));
tbl.BeginLoadData();
using (SQLiteCommand cmd = new SQLiteCommand("PRAGMA database_list", this))
{
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
if (String.Compare(rd.GetString(1), strCatalog, true, CultureInfo.InvariantCulture) == 0
|| strCatalog == null)
{
row = tbl.NewRow();
row["CATALOG_NAME"] = rd.GetString(1);
row["DESCRIPTION"] = rd.GetString(2);
tbl.Rows.Add(row);
}
}
}
}
tbl.AcceptChanges();
tbl.EndLoadData();
................................................................................
tbl.Columns.Add("INDEX_NAME", typeof(string));
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
tbl.BeginLoadData();
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
{
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
maybeRowId = false;
primaryKeys.Clear();
if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].table_info([{1}])", strCatalog, rdTables.GetString(2)), this))
{
using (SQLiteDataReader rdTable = cmdTable.ExecuteReader())
{
while (rdTable.Read())
{
if (rdTable.GetInt32(5) == 1) // is a primary key
{
primaryKeys.Add(new KeyValuePair<int, string>(rdTable.GetInt32(0), rdTable.GetString(1)));
// Is an integer -- could be a rowid if no other primary keys exist in the table
if (String.Compare(rdTable.GetString(2), "INTEGER", true, CultureInfo.InvariantCulture) == 0)
maybeRowId = true;
}
}
}
if (primaryKeys.Count == 1 && maybeRowId == true)
{
row = tbl.NewRow();
row["CONSTRAINT_CATALOG"] = strCatalog;
row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "sqlite_master_PK_{0}", rdTables.GetString(2));
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["COLUMN_NAME"] = primaryKeys[0].Value;
row["INDEX_NAME"] = row["CONSTRAINT_NAME"];
row["ORDINAL_POSITION"] = primaryKeys[0].Key;
if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, (string)row["INDEX_NAME"], true, CultureInfo.InvariantCulture) == 0)
tbl.Rows.Add(row);
}
}
using (SQLiteCommand cmdIndexes = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'index' AND [tbl_name] LIKE '{1}'", strCatalog, rdTables.GetString(2).Replace("'", "''")), this))
{
using (SQLiteDataReader rdIndexes = cmdIndexes.ExecuteReader())
{
while (rdIndexes.Read())
{
if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, rdIndexes.GetString(1), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdIndex = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_info([{1}])", strCatalog, rdIndexes.GetString(1)), this))
{
using (SQLiteDataReader rdIndex = cmdIndex.ExecuteReader())
{
while (rdIndex.Read())
{
row = tbl.NewRow();
row["CONSTRAINT_CATALOG"] = strCatalog;
row["CONSTRAINT_NAME"] = rdIndexes.GetString(1);
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdIndexes.GetString(2);
row["COLUMN_NAME"] = rdIndex.GetString(2);
row["INDEX_NAME"] = rdIndexes.GetString(1);
row["ORDINAL_POSITION"] = rdIndex.GetInt32(1);
if (String.IsNullOrEmpty(strColumn) || String.Compare(strColumn, row["COLUMN_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)
tbl.Rows.Add(row);
}
}
}
}
}
}
}
}
}
}
}
tbl.EndLoadData();
tbl.AcceptChanges();
return tbl;
}
................................................................................
tbl.Columns.Add("COLUMN_NAME", typeof(string));
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
tbl.BeginLoadData();
using (SQLiteCommand cmdViews = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'view'", strCatalog), this))
{
using (SQLiteDataReader rdViews = cmdViews.ExecuteReader())
{
while (rdViews.Read())
{
if (String.IsNullOrEmpty(strView) || String.Compare(strView, rdViews.GetString(2), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdViewSelect = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdViews.GetString(2)), this))
{
strSql = rdViews.GetString(4).Replace('\r', ' ').Replace('\n', ' ').Replace('\t', ' ');
n = CultureInfo.InvariantCulture.CompareInfo.IndexOf(strSql, " AS ", CompareOptions.IgnoreCase);
if (n < 0)
continue;
strSql = strSql.Substring(n + 4);
using (SQLiteCommand cmd = new SQLiteCommand(strSql, this))
{
using (SQLiteDataReader rdViewSelect = cmdViewSelect.ExecuteReader(CommandBehavior.SchemaOnly))
{
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly))
{
using (DataTable tblSchemaView = rdViewSelect.GetSchemaTable(false, false))
{
using (DataTable tblSchema = rd.GetSchemaTable(false, false))
{
for (n = 0; n < tblSchema.Rows.Count; n++)
{
viewRow = tblSchemaView.Rows[n];
schemaRow = tblSchema.Rows[n];
if (String.Compare(viewRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0
|| strColumn == null)
{
row = tbl.NewRow();
row["VIEW_CATALOG"] = strCatalog;
row["VIEW_NAME"] = rdViews.GetString(2);
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_SCHEMA"] = schemaRow[SchemaTableColumn.BaseSchemaName];
row["TABLE_NAME"] = schemaRow[SchemaTableColumn.BaseTableName];
row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.ColumnName];
row["VIEW_COLUMN_NAME"] = viewRow[SchemaTableColumn.ColumnName];
tbl.Rows.Add(row);
}
}
}
}
}
}
}
}
}
}
}
}
................................................................................
tbl.Columns.Add("FKEY_TO_COLUMN", typeof(string));
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
tbl.BeginLoadData();
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
{
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this))
{
using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly))
{
using (SQLiteCommand cmdKey = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].foreign_key_list([{1}])", strCatalog, rdTables.GetString(2)), this))
{
using (SQLiteDataReader rdKey = cmdKey.ExecuteReader())
{
while (rdKey.Read())
{
row = tbl.NewRow();
row["CONSTRAINT_CATALOG"] = strCatalog;
row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "FK_{0}_{1}_{2}", rdTables.GetString(2), rdKey.GetString(3), rdKey.GetString(4));
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["CONSTRAINT_TYPE"] = "FOREIGN KEY";
row["IS_DEFERRABLE"] = false;
row["INITIALLY_DEFERRED"] = false;
row["FKEY_FROM_COLUMN"] = rdKey.GetString(3);
row["FKEY_FROM_ORDINAL_POSITION"] = rdTable.GetOrdinal(row["FKEY_FROM_COLUMN"].ToString());
row["FKEY_TO_CATALOG"] = strCatalog;
row["FKEY_TO_TABLE"] = rdKey.GetString(2);
row["FKEY_TO_COLUMN"] = rdKey.GetString(4);
if (String.IsNullOrEmpty(strKeyName) || String.Compare(strKeyName, row["CONSTRAINT_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)
tbl.Rows.Add(row);
}
}
}
}
}
}
}
}
}
tbl.EndLoadData();
|
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/// <param name="isolationLevel">SQLite doesn't support varying isolation levels, so this parameter is ignored.</param>
/// <param name="deferredLock">When TRUE, SQLite defers obtaining a write lock until a write operation is requested.
/// When FALSE, a writelock is obtained immediately. The default is TRUE, but in a multi-threaded multi-writer
/// environment, one may instead choose to lock the database immediately to avoid any possible writer deadlock.</param>
/// <returns>Returns a SQLiteTransaction object.</returns>
public SQLiteTransaction BeginTransaction(IsolationLevel isolationLevel, bool deferredLock)
{
return BeginTransaction(deferredLock);
}
/// <summary>
/// Creates a new SQLiteTransaction if one isn't already active on the connection.
/// </summary>
/// <param name="deferredLock">When TRUE, SQLite defers obtaining a write lock until a write operation is requested.
/// When FALSE, a writelock is obtained immediately. The default is TRUE, but in a multi-threaded multi-writer
................................................................................
/// <summary>
/// Forwards to the local BeginTransaction() function
/// </summary>
/// <param name="isolationLevel"></param>
/// <returns></returns>
protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)
{
return BeginTransaction(false);
}
/// <summary>
/// Not implemented
/// </summary>
/// <param name="databaseName"></param>
public override void ChangeDatabase(string databaseName)
................................................................................
/// <description>N</description>
/// <description>Y</description>
/// </item>
/// </list>
/// </remarks>
#if !PLATFORM_COMPACTFRAMEWORK
[RefreshProperties(RefreshProperties.All), DefaultValue("")]
[Editor("SQLite.Designer.SQLiteConnectionStringEditor, SQLite.Designer, Version=1.0.31.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public override string ConnectionString
{
get
{
return _connectionString;
}
................................................................................
tbl.Columns.Add("PRIMARY_KEY", typeof(bool));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table' OR [type] LIKE 'view'", strCatalog), this))
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this))
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly))
using (DataTable tblSchema = rd.GetSchemaTable(false, true))
{
foreach (DataRow schemaRow in tblSchema.Rows)
{
if (String.Compare(schemaRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0
|| strColumn == null)
{
row = tbl.NewRow();
row["TABLE_NAME"] = rdTables.GetString(2);
row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.ColumnName];
row["TABLE_CATALOG"] = strCatalog;
row["ORDINAL_POSITION"] = schemaRow[SchemaTableColumn.ColumnOrdinal];
row["COLUMN_HASDEFAULT"] = (schemaRow[SchemaTableOptionalColumn.DefaultValue] != DBNull.Value);
row["COLUMN_DEFAULT"] = schemaRow[SchemaTableOptionalColumn.DefaultValue];
row["IS_NULLABLE"] = schemaRow[SchemaTableColumn.AllowDBNull];
row["DATA_TYPE"] = schemaRow["DataTypeName"]; // SQLiteConvert.DbTypeToType((DbType)schemaRow[SchemaTableColumn.ProviderType]).ToString();
row["CHARACTER_MAXIMUM_LENGTH"] = schemaRow[SchemaTableColumn.ColumnSize];
row["TABLE_SCHEMA"] = schemaRow[SchemaTableColumn.BaseSchemaName];
row["PRIMARY_KEY"] = schemaRow[SchemaTableColumn.IsKey];
tbl.Rows.Add(row);
}
}
}
}
}
}
................................................................................
tbl.Columns.Add("INTEGRATED", typeof(bool));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
maybeRowId = false;
primaryKeys.Clear();
if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0)
{
// First, look for any rowid indexes -- which sqlite defines are INTEGER PRIMARY KEY columns.
// Such indexes are not listed in the indexes list but count as indexes just the same.
using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].table_info([{1}])", strCatalog, rdTables.GetString(2)), this))
using (SQLiteDataReader rdTable = cmdTable.ExecuteReader())
{
while (rdTable.Read())
{
if (rdTable.GetInt32(5) == 1)
{
primaryKeys.Add(rdTable.GetInt32(0));
// If the primary key is of type INTEGER, then its a rowid and we need to make a fake index entry for it.
if (String.Compare(rdTable.GetString(2), "INTEGER", true, CultureInfo.InvariantCulture) == 0)
maybeRowId = true;
}
}
}
if (primaryKeys.Count == 1 && maybeRowId == true)
{
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["INDEX_CATALOG"] = strCatalog;
row["PRIMARY_KEY"] = true;
row["INDEX_NAME"] = String.Format(CultureInfo.InvariantCulture, "sqlite_master_PK_{0}", rdTables.GetString(2));
row["UNIQUE"] = true;
if (String.Compare((string)row["INDEX_NAME"], strIndex, true, CultureInfo.InvariantCulture) == 0
|| strIndex == null)
{
tbl.Rows.Add(row);
}
primaryKeys.Clear();
}
// Now fetch all the rest of the indexes.
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_list([{1}])", strCatalog, rdTables.GetString(2)), this))
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
if (String.Compare(rd.GetString(1), strIndex, true, CultureInfo.InvariantCulture) == 0
|| strIndex == null)
{
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["INDEX_CATALOG"] = strCatalog;
row["INDEX_NAME"] = rd.GetString(1);
row["UNIQUE"] = rd.GetBoolean(2);
row["PRIMARY_KEY"] = false;
// Now for the really hard work. Figure out which index is the primary key index.
// The only way to figure it out is to check if the index was an autoindex and if we have a non-rowid
// primary key, and all the columns in the given index match the primary key columns
if (primaryKeys.Count > 0 && rd.GetString(1).StartsWith("sqlite_autoindex_" + rdTables.GetString(2), StringComparison.InvariantCultureIgnoreCase) == true)
{
using (SQLiteCommand cmdDetails = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_info([{1}])", strCatalog, rd.GetString(1)), this))
using (SQLiteDataReader rdDetails = cmdDetails.ExecuteReader())
{
int nMatches = 0;
while (rdDetails.Read())
{
if (primaryKeys.Contains(rdDetails.GetInt32(1)) == false)
{
nMatches = 0;
break;
}
nMatches++;
}
if (nMatches == primaryKeys.Count)
{
row["PRIMARY_KEY"] = true;
primaryKeys.Clear();
}
}
}
tbl.Rows.Add(row);
}
}
}
}
}
}
................................................................................
tbl.Columns.Add("TABLE_TYPE", typeof(string));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
strItem = rd.GetString(0);
if (String.Compare(rd.GetString(2), 0, "SQLITE_", 0, 7, true, CultureInfo.InvariantCulture) == 0)
strItem = "SYSTEM_TABLE";
if (String.Compare(strType, strItem, true, CultureInfo.InvariantCulture) == 0
|| strType == null)
{
if (String.Compare(rd.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0
|| strTable == null)
{
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rd.GetString(2);
row["TABLE_TYPE"] = strItem;
tbl.Rows.Add(row);
}
}
}
}
tbl.AcceptChanges();
tbl.EndLoadData();
................................................................................
tbl.Columns.Add("DATE_MODIFIED", typeof(DateTime));
tbl.BeginLoadData();
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'view'", strCatalog), this))
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
if (String.Compare(rd.GetString(1), strView, true, CultureInfo.InvariantCulture) == 0
|| String.IsNullOrEmpty(strView))
{
strItem = rd.GetString(4).Replace('\r', ' ').Replace('\n', ' ').Replace('\t', ' ');
nPos = Globalization.CultureInfo.InvariantCulture.CompareInfo.IndexOf(strItem, " AS ", CompareOptions.IgnoreCase);
if (nPos > -1)
{
strItem = strItem.Substring(nPos + 4).Trim();
row = tbl.NewRow();
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rd.GetString(2);
row["IS_UPDATABLE"] = false;
row["VIEW_DEFINITION"] = strItem;
tbl.Rows.Add(row);
}
}
}
}
tbl.AcceptChanges();
tbl.EndLoadData();
................................................................................
tbl.Locale = CultureInfo.InvariantCulture;
tbl.Columns.Add("CATALOG_NAME", typeof(string));
tbl.Columns.Add("DESCRIPTION", typeof(string));
tbl.BeginLoadData();
using (SQLiteCommand cmd = new SQLiteCommand("PRAGMA database_list", this))
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
{
while (rd.Read())
{
if (String.Compare(rd.GetString(1), strCatalog, true, CultureInfo.InvariantCulture) == 0
|| strCatalog == null)
{
row = tbl.NewRow();
row["CATALOG_NAME"] = rd.GetString(1);
row["DESCRIPTION"] = rd.GetString(2);
tbl.Rows.Add(row);
}
}
}
tbl.AcceptChanges();
tbl.EndLoadData();
................................................................................
tbl.Columns.Add("INDEX_NAME", typeof(string));
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
tbl.BeginLoadData();
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
maybeRowId = false;
primaryKeys.Clear();
if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].table_info([{1}])", strCatalog, rdTables.GetString(2)), this))
using (SQLiteDataReader rdTable = cmdTable.ExecuteReader())
{
while (rdTable.Read())
{
if (rdTable.GetInt32(5) == 1) // is a primary key
{
primaryKeys.Add(new KeyValuePair<int, string>(rdTable.GetInt32(0), rdTable.GetString(1)));
// Is an integer -- could be a rowid if no other primary keys exist in the table
if (String.Compare(rdTable.GetString(2), "INTEGER", true, CultureInfo.InvariantCulture) == 0)
maybeRowId = true;
}
}
}
if (primaryKeys.Count == 1 && maybeRowId == true)
{
row = tbl.NewRow();
row["CONSTRAINT_CATALOG"] = strCatalog;
row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "sqlite_master_PK_{0}", rdTables.GetString(2));
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["COLUMN_NAME"] = primaryKeys[0].Value;
row["INDEX_NAME"] = row["CONSTRAINT_NAME"];
row["ORDINAL_POSITION"] = primaryKeys[0].Key;
if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, (string)row["INDEX_NAME"], true, CultureInfo.InvariantCulture) == 0)
tbl.Rows.Add(row);
}
using (SQLiteCommand cmdIndexes = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'index' AND [tbl_name] LIKE '{1}'", strCatalog, rdTables.GetString(2).Replace("'", "''")), this))
using (SQLiteDataReader rdIndexes = cmdIndexes.ExecuteReader())
{
while (rdIndexes.Read())
{
if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, rdIndexes.GetString(1), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdIndex = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_info([{1}])", strCatalog, rdIndexes.GetString(1)), this))
using (SQLiteDataReader rdIndex = cmdIndex.ExecuteReader())
{
while (rdIndex.Read())
{
row = tbl.NewRow();
row["CONSTRAINT_CATALOG"] = strCatalog;
row["CONSTRAINT_NAME"] = rdIndexes.GetString(1);
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdIndexes.GetString(2);
row["COLUMN_NAME"] = rdIndex.GetString(2);
row["INDEX_NAME"] = rdIndexes.GetString(1);
row["ORDINAL_POSITION"] = rdIndex.GetInt32(1);
if (String.IsNullOrEmpty(strColumn) || String.Compare(strColumn, row["COLUMN_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)
tbl.Rows.Add(row);
}
}
}
}
}
}
}
}
tbl.EndLoadData();
tbl.AcceptChanges();
return tbl;
}
................................................................................
tbl.Columns.Add("COLUMN_NAME", typeof(string));
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
tbl.BeginLoadData();
using (SQLiteCommand cmdViews = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'view'", strCatalog), this))
using (SQLiteDataReader rdViews = cmdViews.ExecuteReader())
{
while (rdViews.Read())
{
if (String.IsNullOrEmpty(strView) || String.Compare(strView, rdViews.GetString(2), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdViewSelect = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdViews.GetString(2)), this))
{
strSql = rdViews.GetString(4).Replace('\r', ' ').Replace('\n', ' ').Replace('\t', ' ');
n = CultureInfo.InvariantCulture.CompareInfo.IndexOf(strSql, " AS ", CompareOptions.IgnoreCase);
if (n < 0)
continue;
strSql = strSql.Substring(n + 4);
using (SQLiteCommand cmd = new SQLiteCommand(strSql, this))
using (SQLiteDataReader rdViewSelect = cmdViewSelect.ExecuteReader(CommandBehavior.SchemaOnly))
using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly))
using (DataTable tblSchemaView = rdViewSelect.GetSchemaTable(false, false))
using (DataTable tblSchema = rd.GetSchemaTable(false, false))
{
for (n = 0; n < tblSchema.Rows.Count; n++)
{
viewRow = tblSchemaView.Rows[n];
schemaRow = tblSchema.Rows[n];
if (String.Compare(viewRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0
|| strColumn == null)
{
row = tbl.NewRow();
row["VIEW_CATALOG"] = strCatalog;
row["VIEW_NAME"] = rdViews.GetString(2);
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_SCHEMA"] = schemaRow[SchemaTableColumn.BaseSchemaName];
row["TABLE_NAME"] = schemaRow[SchemaTableColumn.BaseTableName];
row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.ColumnName];
row["VIEW_COLUMN_NAME"] = viewRow[SchemaTableColumn.ColumnName];
tbl.Rows.Add(row);
}
}
}
}
}
}
}
................................................................................
tbl.Columns.Add("FKEY_TO_COLUMN", typeof(string));
if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
tbl.BeginLoadData();
using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'table'", strCatalog), this))
using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
{
while (rdTables.Read())
{
if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0)
{
using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this))
using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly))
using (SQLiteCommand cmdKey = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].foreign_key_list([{1}])", strCatalog, rdTables.GetString(2)), this))
using (SQLiteDataReader rdKey = cmdKey.ExecuteReader())
{
while (rdKey.Read())
{
row = tbl.NewRow();
row["CONSTRAINT_CATALOG"] = strCatalog;
row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "FK_{0}_{1}_{2}", rdTables.GetString(2), rdKey.GetString(3), rdKey.GetString(4));
row["TABLE_CATALOG"] = strCatalog;
row["TABLE_NAME"] = rdTables.GetString(2);
row["CONSTRAINT_TYPE"] = "FOREIGN KEY";
row["IS_DEFERRABLE"] = false;
row["INITIALLY_DEFERRED"] = false;
row["FKEY_FROM_COLUMN"] = rdKey.GetString(3);
row["FKEY_FROM_ORDINAL_POSITION"] = rdTable.GetOrdinal(row["FKEY_FROM_COLUMN"].ToString());
row["FKEY_TO_CATALOG"] = strCatalog;
row["FKEY_TO_TABLE"] = rdKey.GetString(2);
row["FKEY_TO_COLUMN"] = rdKey.GetString(4);
if (String.IsNullOrEmpty(strKeyName) || String.Compare(strKeyName, row["CONSTRAINT_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)
tbl.Rows.Add(row);
}
}
}
}
}
tbl.EndLoadData();
|